TLF4277-2EL Low Dropout Linear Voltage Regulator Infineon TLF4277-2EL Low Dropout Linear Voltage Regulator is the ideal companion IC to supply active antennas for car infotainment applications. The adjustable output voltage makes these devices capable of supplying the majority of standard active antennas such as FM/AM, DAB, XM, and SIRIUS. The TLF4277-2EL is a monolithic integrated low-dropout voltage regulator capable of supplying loads up to 300mA. For an input voltage up to 40V the TLF4277-2EL provides an adjustable output voltage in a range from 5V up to 12V. The integrated current monitor function is a unique feature that provides diagnosis and system protection functionality. Fault conditions such as overtemperature and output overvoltage are monitored and indicated at the current sense output. The maximum output current limit of the device is adjustable to provide additional protection to the connected load.